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101212 (1998 SK51)
Classification: Main-belt Asteroid          SPK-ID: 2101212
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .19597108581545 4.8752e-08  
a 2.626196907596262 1.0937e-08 au
q 2.111538248049445 1.2918e-07 au
i 12.25562824882997 5.7311e-06 deg
node 13.64266944594078 1.7952e-05 deg
peri 340.6080633476611 2.1316e-05 deg
M 51.06611747357957 9.8259e-06 deg
tp 2458779.994363896593
(2019-Oct-23.49436390)
4.2239e-05 TDB
period 1554.495092333916
4.26
9.7111e-06
2.659e-08
d
yr
n .2315864500154173 1.4467e-09 deg/d
Q 3.140855567143078 1.3081e-08 au
  Orbit Determination Parameters
   # obs. used (total)      664  
   data-arc span      8088 days (22.14 yr)  
   first obs. used      1998-09-13  
   last obs. used      2020-11-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57875  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 04:28:28  

Additional Information
 Earth MOID = 1.11172 au 
 Jupiter MOID = 2.31644 au 
 T_jup = 3.343 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8   n/a MPO493568  

101212 (1998 SK51)          Discovered 1998-Sep-27 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 SK51 = 2002 SJ56 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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